Finding the Fourth Proportional to 613,582.79, 920,066.20 and 357,498.25

Step by Step Solution

1. Step 1: Write the proportion equation
   613,582.79 : 920,066.20 = 357,498.25 : x
2. Step 2: Convert to fraction form
   613,582.79/920,066.20 = 357,498.25/x
3. Step 3: Cross multiply
   613,582.79x = 920,066.20 × 357,498.25
4. Step 4: Simplify right side
   613,582.79x = 328,922,056,384.15
5. Step 5: Solve for x
   x = 328,922,056,384.15/613,582.79
6. Step 6: Final answer
   x = 536,067.93